Former New Zealand captain Brendon McCullum has been named as Kolkata Knight Riders (KKR) new head coach, seven days after his retirement as player from all forms of cricket. McCullum had represented KKR as a player first from 2008 to 2010 and again from 2012 to 2013. The 37-year-old played 370 T20 matches, scoring 9,922 runs.